Key-fastener.



F. S. ODENZ.

KEY FASTENBB.

APPLICATION FILED MAR. 30, 1910.

Patented Dec.20,1910.

lbwwcK) 2% N ,JPLcmL are FRANK S. ODENZ, OF CHICAGO, ILLINOIS.

KEY-FASTENER.

To all whom it may concern:

Be it known that I, FRANK S. ODENZ, a citizen of the United States,residing at Chicago, county of Cook, and State of Illinois, haveinvented certain new and useful Impr vements in Key-Fasteners, of whichthe following is a specification.

My invention relates to improvements in key fasteners, and moreparticularly to such devices as are attached to a door in proximity tothe lock thereof and are adapted to engage the key while the latter isin the lock in such a manner as to hold said key against being turned orforced out of the lock from the outside of the door, as is possible withordinary door locks where no extraneous means are provided to preventsuch removal.

The object of my invention is to provide a device as above characterizedwhich shall be inexpensive of construction and'efticient in itsoperation, a further object being to so construct the device that it maybe de taohed when its use is not desired.

Other objects will appear hereinafter.

With these objects in view my invention consists in the novelconstruction and arrangement of parts which will be hereinafter fullydescribed and more particularly pointed out in the appended claim.

My invention will be more readilyunderstood by reference to theaccompanying drawings forming a part of this specification. and inwhich,

Figure l is a front elevation of a portion of a door embodying myinvention in its preferred form, and Fig. 2 is a sectional view thereof.

Referring now to the drawing, 1 designates an ordinary door and 2 a doorkey, the latter being in position in the key-hole 3 and in the door lock(not shown). Arranged beneath and adjacent the key-hole 3 is a sheetmetal plate a which is secured to the door by means of screws 5, athreaded pin 6 being centrally arranged and integral with said plate.The pin 6 is provided with a thumb nut 7 by means of which the swing ingarm 8 is detachably pivoted to said pin. The body portion of theswinging arm 8 is inclined to the door as shown in Fig. 2 and at theupper end thereof a U-shaped loop Specification of Letters Patent.

Application filed March 30, 1910.

Patented Dec. 20, 1910.

Serial No. 552,378.

is provided which is adapted to embrace the handle of the key, said loopbeing provided with top and bottom members, as clearly shown in Fig. 2.The top member of the U-shaped portion of the swinging arm 8 is providedwith a thumb screw 9 by means of which the handle of the key 2 isrigidly secured after the same is embraced by said loop.

In order to unlock the door the thumb screw 9 is loosened when theswinging arm 8 may be thrown to the dotted line position shown in Fig.1.

It will be seen that when the arm 8 is in operative position that thekey cannot be turned or forced out of the look from either side of thedoor and that the device is easily operated for either engaging ordisengaging the key.

lVhile I have shown what I deem to be the preferable form of my improvedkey fastener, T do not wish to be limited thereto as there might bevarious changes made in the details of construction and arrangement ofparts described without departing from the spirit of my invention, andhence I desire to avail myself of such variations and alterations asfairly fall within the scope of the appended claim.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

A key fastener comprising a plate secured to the door adjacent and belowthe key-hole thereof, a threaded pin integral with said plate, an armdetachably pivoted to said pin by means of a thumb-nut screwed on thelatter, the body of said arm being inclined to the door and the portionthereof opposite the pivoted end being provided with a U- shaped loophaving top and bottom members, and a thumb screw mounted in the topmember of said loop, substantially as de scribed.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FRANK S. ODENZ.

WVitnesses HELEN F. LiLLis, JOSHUA R. H. Po'r'rs.

